<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title></title>
</head>
<body>

<script>

var session = "${USER!''}";
if("" == session){
top.location = "/login.html";
}
if (null == session) {
top.location = "/login.html";
}
</script>
</body>
</html>